Backup alarm



FIG. 1 is a front elevational view of a backup alarm;

FIG. 2 is a left side elevational view of the backup alarm;

FIG. 3 is a right side elevational view of the backup alarm;

FIG. 4 is a front right perspective view of the backup alarm;

FIG. 5 is a front left perspective view of the backup alarm;

FIG. 6 is a rear elevational view of the backup alarm;

FIG. 7 is a rear right perspective view of the backup alarm;

FIG. 8 is a rear left perspective view of the backup alarm;

FIG. 9 is a top plan view of the backup alarm;

FIG. 10 is a front top perspective view of the backup alarm; and,

FIG. 11 is a rear top perspective view of the backup alarm.

A bottom view of the backup alarm forms no part of the claimed design.

CLAIM What is claimed is the ornamental design for a backup alarm, asshown and described.